package org.apache.commons.ognl;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.Enumeration;
import java.util.Iterator;

/**
 * Object that implements Iterator from an Enumeration
 */
public class EnumerationIterator<E>
    implements Iterator<E>
{

    public static <T> Iterator<T> newIterator( Enumeration<T> e )
    {
        return new EnumerationIterator<T>( e );
    }

    private final Enumeration<E> e;

    public EnumerationIterator( Enumeration<E> e )
    {
        this.e = e;
    }

    public boolean hasNext()
    {
        return e.hasMoreElements();
    }

    public E next()
    {
        return e.nextElement();
    }

    public void remove()
    {
        throw new UnsupportedOperationException( "remove() not supported by Enumeration" );
    }

}
